抄録
Visual suppression of caloric nystagmus was studied in 86 consecutive patients with spinocerebellar degenerations.
In 16 of the 86 cases caloric nystagmus was normally suppressed by visual fixation, while in 41 it was not suppressed and in 19 it was even enhanced by visual fixation. In 10, the influence of visual fixation on caloric nystagmus could not be evaluated because of absence of caloric nystagmus or disturbance of the quick phase of nystagmus.
Patients with hereditory and/or chronic illness had a higher incidence and severer degree of disturbance of visual suppression of caloric nystagmus. The correlation between the duration of illness and the extent of visual suppression was confirmed statistically. There was no correlation, however, between the age of onset and the extent of visual suppression.
